/*
 * @Author: nns4
 * @Date: 2021-02-26 16:49:09
 * @LastEditors: nns4
 * @FilePath: /studyNote/note/js/28.().js
 * @Description: 
 */

$(function(){
    alert("456")
})
(function(){
    alert("123")
})()
// (function ($) {
//     alert("789")
// })(jQuery);